Electric Vehicle Slope Device Clearance Integration
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Solution Overview
Problem
The existing electric vehicle with in-wheel motors lacks a storage space for a slope device, making it unsuitable for loading articles or accommodating wheelchair users, as it does not provide the necessary infrastructure for shipment or accessibility.
Innovation Solution
An electrically-driven vehicle design featuring a box-shaped base frame with a battery storage compartment and a separately arranged floor panel, where a slope device is mounted in the clearance between the base frame and floor panel, equipped with an actuator and control unit to adjust the slope board's length and angle for smooth loading/unloading and wheelchair access, and a door mechanism that interlocks with the slope device's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drive unit is attached to the side surface of the battery frame, then the floor height can be lowered and the vehicle cabin floor can be full-flat, but no storage space for the slope device is provided
Solution Approach 1:
The patent utilizes the vertical clearance space between the battery frame and the floor panel to accommodate the slope device. By transitioning from a horizontal storage approach to a vertical clearance utilization, the slope device is integrated without increasing floor height or compromising the full-flat floor design. This dimensional repositioning resolves the contradiction between maintaining low floor height and providing slope device storage capability.
2Device complexity
If the floor panel is directly attached to the base frame, then structural simplicity is maintained, but heat from the battery transfers to the floor panel
Solution Approach 1:
The patent introduces a buffer member as an intermediary element positioned between the battery frame and the floor panel. This buffer member serves as a thermal barrier that prevents heat transfer from the battery to the floor panel while maintaining the structural connection. The addition of this intermediary component resolves the heat transfer issue with minimal increase in structural complexity.
3Adaptability or versatility
If the slope device is added to the vehicle, then loading/unloading and wheelchair access are facilitated, but the vehicle structure becomes more complex
Solution Approach 1:
The patent merges the slope device with the existing clearance space between the battery frame and floor panel. By integrating the slope device into this pre-existing structural gap rather than adding a separate storage compartment or modifying the floor structure, the vehicle structure complexity is minimized while still achieving the functional benefit of slope device capability for loading and wheelchair access.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for the integration of a slope device that facilitates smooth loading/unloading of articles and wheelchair access while preventing battery heat transfer and reducing vibrations within the vehicle cabin.
Implementation Method 1
an actuator that feeds the slope board in and out
Implementation Method 2
the floor panel may be provided above the base frame in the vehicle via a buffer member. In this way, it is possible to prevent vibrations of a floor of the vehicle cabin
Implementation Method 3
it is possible to prevent heat of the battery from being transferred to the floor panel
Data Source
AI summary
An electric vehicle includes: a box-shaped base frame in which a battery is stored in an internal space, with a vehicle drive unit using an in-wheel motor attached to a side surface; and a floor panel that is separately arranged from the base frame at a position above the base frame in the vehicle. In the electric vehicle, a slope device that feeds out a slope board toward a sidewalk or a road is provided in a clearance between the base frame and the floor panel.